Recognised as Colour
#F21567
- #F21567
- Red
- Dark
- Nearest: Crimson
#F21567 is a red with RGB values 242, 21, 103 and HSL 338°, 89%, 52%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F21567#F21567
HEX#F21567
RGBrgb(242, 21, 103)
RGB (0–1)0.949, 0.0824, 0.4039
RGB percentages94.9%, 8.2%, 40.4%
HSLhsl(337.7, 89.5%, 51.6%)
HSV / HSBhsv(337.7, 91.3%, 94.9%)
CMYK0%, 91.3%, 57.4%, 5.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,865,191
CSS custom property--colour: #F21567;
Brightness & contrast
Relative luminance0.20393WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.08:1
Contrast with white4.14:1WCAG normal text: Fail
Contrast with black5.08:1WCAG normal text: AA
Greyscale equivalent#4A4A4A
Inverted#0DEA98
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.14:1WCAG large text: AA
Contrast with black, large text5.08:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#15F2A0
Analogous#F215D6, #F23115
Triadic#67F215, #1567F2
Split complementary#15F231, #15D5F2
Tetradic#D5F215, #15F2A0, #3115F2
Tints, shades & saturation
Channel breakdown
R242
G21
B103
Red242 (94.9%)
Green21 (8.2%)
Blue103 (40.4%)
Hue337.74°
Saturation (HSL)89.47%
Lightness51.57%
Dominant channelRed
Hex per channelR F2 · G 15 · B 67
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Also reads as
F21567 (chemical formula)
- Formula
- 409,729.866 g/mol
- 21567 atoms
F21567 has a molar mass of 409,729.866 g/mol, made up of 21567 atoms across 1 element: 21567 × F.
Molar mass
Molar mass409,729.866 g/mol
Total atoms per molecule21567
Distinct elements1
Mass of one molecule6.8037245 × 10^-19 g
Molecules per gram1.4697832 × 10^18
Name
NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show
Composition by mass
F100%
Fluorine (F × 21567)409,729.866 g/mol, 100%
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